Rosemont, Illinois (CNN) - Rick Santorum emerged from a stretch of public silence on Friday and previewed his political future: revealing his intention to campaign for former rival Mitt Romney, admitting he has not released his delegates to this summer's Republican National Convention and announcing that he'll stay politically active through a political committee.

Although Santorum has endorsed Romney and has pledged to defeat President Obama, one comment Santorum made to reporters suggested that political wounds sustained during the Republican primary are not entirely healed.FULL POST

(CNN) - The threat of further economic turmoil in Europe threatens the U.S. economy, President Barack Obama said Friday in urging European leaders to enact plans to stabilize their economies.

Congress should adopt a jobs plan and other economic legislation to help counter economic "headwinds" from Europe holding back U.S. economic recovery, Obama said.

The United States will conduct "thorough investigations" into the leak of classified information, Obama said, making his first public comments on the controversy since several members of Congress called for an independent counsel to investigate.

"The notion that my White House would release classified national security information is offensive," Obama said.

(CNN) – Florida's Republican-appointed secretary of state said Friday his state's effort to remove non-U.S. citizens from voter rolls is a legal and necessary step to prevent fraud, and that critics who label the move a political tactic are misinformed.

"If there's a non-citizen eligible to vote and votes in this election, they'll neutralize and delete someone else's vote that's eligible to vote," Ken Detzner said on CNN's "Starting Point with Soledad O'Brien"FULL POST

Washington (CNN) - His name is bantered about all the time in the media as a potential running mate for Mitt Romney, but a new poll indicates that more than half of Americans don't know enough about Rob Portman to form an opinion of the Republican senator from Ohio.

According to an ABC News/Washington Post poll, 51% of the public says they have no opinion of Portman, a former cabinet official in George W. Bush's White House and former congressman. While high, that's lower than the 81% who said in a CNN/ORC International poll in mid-April they didn't know enough about Portman to form an opinion. Since then Portman's become more visible on the campaign trail as a Romney surrogate and has appeared more in the media.FULL POST

Washington (CNN) - Two months after he suspended his presidential campaign, former Pennsylvania Sen. Rick Santorum on Friday laid out his future plans as he looks for ways to make sure his voice is heard and his influence is felt as a leader of the conservative wing of the Republican Party.

Santorum announced he was forming Patriot Voices, a 501(c)(4) non-profit organization he said would promote some of his key issues, including a commitment to family.FULL POST

(CNN) – Mitt Romney's record as governor of Massachusetts, which has come under renewed scrutiny from his Democratic rivals in the past two weeks, is the subject of a positive television ad released by the Republican candidate's campaign Friday.

The 30-second spot, called "Strong Leadership," offers a glowing assessment of Romney's time as Bay State governor, seeking to negate recent ads from President Barack Obama and his allies that portray his record as bad on jobs. According to data provided to clients of the Campaign Media Analysis Group, the ad is running in battleground states New Hampshire, Iowa, North Carolina, Ohio, Colorado, Nevada and Virginia.